Glass-molding apparatus



June 30, 1.925. 1,543,725

- c. B. ROE

GLASS MOLDING APPARATUS Original Filed D80. 21- 2 2 'she 1 June 30. 1925. 5 1,543,725

. C. B. ROE

(zLASS MOLDING APPAPATUS Original Flled Dec. 21. 22 2 sheetsheet Patented June 30, 1925.

VUNITED STATES CALVIN B. ROE, OF MOUNDSVILLEIVEST VIRGINIA, ASSIGNOR TO FOSTORIA' GLASS COMPANY, OF MOUNDSVILLE'VTEST VIRGINIA, A CORPORATION OF WEST VIR- GINIA.

GLASS-MOLDING APPARATUS.

Continuation of application Serial No. 608,189, filed December 21, 1922. This application filed December 26, 1924. Serial No. 758,050.

' resident of Moundsville, countyof Marshall,

and State of West Virginia, have invented certain new and useful Improvements 1n Glass-Molding Apparatus, of which the following is a specification. V

This invention relates broadly to glass molding apparatus, and it has for. its primary object to provide a mold structure whereby the manufacture of a candle holder and bobeche in a single piece may be successfully accomplished.

l-leretofore, it has been the universal practice to form a candle holder and the bobeche which is to be associated therewith in two separate pieces, due to the fact that no prior mechanism has been devised whereby the required perforations of the bobeche could be produced during the molding in an integral form of the cup-like candle holder and the bobeche. The present invention provides an apparatus or mechanism by means of which the difficulties previously presented are overcome, enabling the manufacture of a candle holder andbobeche in an integral, or onepiece, structure.

More specifically stated, the present in vention provides a mold mechanism for shaping a candle holder and a bobeche in a single piece, including devices for forming in the bobeche the usual perforations for the reception of pendent-suspension wires and means whereby said. devices may be promptly freed from the glass.

In describing the invention in detail, reference is herein had to the accompanying drawings, in which Figure 1 is a central vertical section of the invention;

Figure 2 is' a section taken substantially on line 22, Fig. 1; and- Figure 8 is a fragmentary detail View showing the inclined slots along which travel the carrying-pins for the rotary ring.

Referring to said drawings, 1 indicates the base for a sectional mold 2 of the usual hinged type, said base having formed centrally upon its top face an integral boss-like portion 3 which constitutes a centering ring for the mold 2, said portion having its outer annular wall downwardly and inwardly inclined and forming a miter joint with the mold when the latter is closed, as ordinarily.

Said mold base 1 forms the top plate of a mechanism whereby a valve 4 is actuated into and out of the mold for forming the candle-socket 5 in the glass article which is being shaped in the mold. Said plunger actuating mechanism has a form which is more or less common to the so-called elevators employed in the art of glass manufacture for raising and lowering pins, valves and the like into molds, the same comprising a base plate 6, upright supporting posts 7 carried by said base plate and having said mold base 1 mounted thereon, a centrally disposed guide sleeve 8, a valve-carrying member 9 embraced by said sleeve and hav- 111g opposite outwardly directed spindles 10 carrying anti-friction rollers 11, and a horizontally shiftable slide 12, the latter having in each of its opposite sides an inclined slot 13 in which the rollers 11 are received. Through longitudinal shifting movement of said slide, the member 9 is raised and lowered in an obvious manner for elevating and lowering the valve 4: through the mold base 1 to and from its operative position shown in Fig. 1.

The mold 2 is shaped interiorly forforming in a single piece the candle holder 14, the bobeche 15 and the stem or plug 16. An

upper mold portion 19 in the form of a central plug-shaping rlng is mounted upon the top of the mold 2 and carries thereon the mold cup 17 in which the molten glass is introduced to be pressed into the mold cavities by means of the usual plunger 18. The said complemental mold portion, or plug-shaping ring 19, hereinafter termed a ring mold, has its under side shaped to seat closely in a seat 20 provided in the top of the sectional mold. The under face of said ring mold and the confront-ing top face of the sectional mold are further shaped complementally for forming therebetween the bobeche 15. Provided in the top face of said ring mold is a seat 21 of circular form .in which is fitted a ring 22 which is ver- 'tically movable to and from seated position and which has disposed in overlying relation thereto a rotary ring 2 1 that embraces the lower end portion of the mold cup 17. Up right bolts 23 have their lower ends fixed in said ring 22 and extend through slots 32 provided therefor in the ring 2% and have their heads resting upon said ring 24.. V

Overlying and having its outer edge por tion resting upon the outer edge portion of the ring mold 19 is a cap 25. Formed in said meeting edge portions of the ring mold 19 and the cap at suitably spaced intervals are short inclined slots 26 throughone of which extends an operating lever, 27 which has itsinner end mounted in theperipheral edge portion of the ring 24. Car rying-pins 28, also mounted in the peripheral edge of said ring 2%, are disposed in the remaining. slots 26 1 Rotary movement of said ring2 l, effected by hand powerapplied to said lever 27, servesto elevate andlower verticallylsaid ring and the underlying ring 22 with res pect to the ring mold 19, accord ing as the lever is advanced upward ,or retracted along the incline, of its slot 26. In the lowered position ofthe rings 22 and 24: a plurality of downwardly extending pins 29 carried by the former and. havingv tapered lower ends have their said ends positioned to form in the outer edge portion of the bobeche 15 aplurality of tapered perforations, as shown at in Fig. 1. Said pins 29 extend through holes 31 provided therefor in the ring mold 19. p

Immediately following the glass pressing operation, the ring 2 1 is rotated forward to elevate the rings 22 and and, consequent ly, to effect the release of the tapered ends or points ofsaid pins 29 from the glass, there:

by to prevent the pins from interfering with shrinkage of .the glass; ,It may liere be stated that, were the .perforationrtorming pins not withdrawn very promptly, fractures of the glass at and adjacent to said pinswouldinevitably occur as the result of the shrinkage strains imposedin .cooling The slots 32 ofthe ring 24 through which the bolts 23 are, directed are arcuately curved and thus permit-of the rotation of saidring 24 required to efi'ect'elevation and loweringvof the ring 22 and the pins 29, M

In practice,'the,valve 4 is elevated to its operative position, and the perforationforining pins 29 are lowered tothe limit of their downward movement, prior to the ap plication through the press plunger 18 of glass displacing pressure to the glass deposited in the cup174 0t the mold; The pressing operation is followed promptly elevation of the pins .29. The soclretformin'g valve 4 is then lowered to its withdrawn position by drawing the elevating slide 12 rearward; then the cu pll'iand surplus glass 34 is lifted off. This removal of said cup 17 and surplus/glass 34 is, accomplished by fracture.andseverance of the glass (at the point of least resistance, which point is locatedl at theupper end of the tapered plug 16, or at the juncture of said plug 'withthe surplus glass portion 34 of cup-lilfrel-shape that is accommodated within thefcup 17 above the ring mold 19, and, consequently, said severed surplus glassportion is remold for releasing the formed article so that the same may be removed upon opening the sectional mold 2. This application is" a'contlnuance of my hat is claimed is 1. Glass molding mechanism comprising asectional h nged mold, base 'lorsanl mold, a. valve shittable through said baseinto and out of cooperative ware-forming relation to said mold, means for elevatii i and lowering said valve, said mold having its top provided with aseat, a inold" member complemental to; said hinged mold disposed on said seat, a ring" niountednpon and vertically movable with respect to said coniplemental mold member, said ring carrying plurality of depending pinswhich are vertically movable through said member, means for elevating and lowering said ring to effect elevation and depression of said pins,,and a receiver for molten glass surinounting the central portion of said complemental Y mold member.

2. Glass molding mechanism comprising a sectional hingedanold, a base for said mold, a valve shittable through said into a'n'dlout of cooperative ware-forming relation to said niold, n 1eans for elevating and lowering said valve, a riiold member complemental to said sectional mold super} posed on thelatter, a receiver for manta glass surmo-unting said complemental mold m'mber, a plurality of depending adapted to form perforations in theware beingshaped, and means for lowering-said pins-to and" elevating said pins from perforation-forming position; v v v v 7 3, The co mbination with U a sectional hingedfniold aring mold mounted upon the top of said sectional mold, a base for said sectional mold, a valve operable through said base into cooperative ware forming relation to the sectional mold, pins directed downwardly through said ring mold and means for effecting vertical 'elevatingand lowering movement of said pins. l, The combination with. a sec ional hingedmold having its topface provided with a seat, of a base for said 1n0ld, a valve operable throughsaid base into cooperative ware-forming ,relation to said mold, ring mold removably mounted on said in c-omplemental relation to said sectional mold, pins movablevertically through said ring mold, and rotary means for lowering said pins to perforationsforming position with respect to the ware which is being formed and for withdrawing said pins.

- 5. The combination with a sectional hinged mold having its top face provided with a seat, of a base for said mold, a valve pending application, Serial CIT iao

operable through said base into cooperative ware-forming relation to said mold, a member removably mounted in said seat in complemental wareshaping relation to said sectional mold, a ring superposed over said memher, said ring having a plurality'of vertically depending fixed pins operable through said member, and means for elevating and lowering said ring. 1

6. The combination with a sectional hinged mold having its top face provided with a seat, of a base for said mold, a valve operable through said base into cooperative ware-forming relation to said mold, a member removably mounted on said seat in complemental ware-shaping relation to said sectional mold, a ring superposed over said member, said ring having a plurality of fixed pins depending vertically therefrom through said member, and a rotary device whereby said ring is elevated and lowered for elevating and lowering said pins.

7. The combination with a sectional hinged mold, of a base for said mold, a valve operable through said base into 00- operative ware-forming relation to the mold, a ring mold superposed upon and cooperating with said sectional mold for shaping the ware, a ring superposed over said ring mold, said ring having a plurality of fixed pins depending vertically therefrom through said ring mold, a ring overlying and rotatable with respect tosaid pin-carrying ring and having the latter suspended therefrom, means for imparting rotary movement to said rotary ring, and means whereby said movement effects elevation or lowering of said pin carrying ring according to the direction of rotation.

In testimony whereof, I afiix my signature in presence of two subscribing witnesses.

CALVIN B. ROE, Witnesses:

WV. B. HICKS, A. W. KOENEMUND. 

